6493445156 has 18 divisors (see below), whose sum is σ = 12490491510. Its totient is φ = 2951565760.

The previous prime is 6493445143. The next prime is 6493445159. The reversal of 6493445156 is 6515443946.

It can be written as a sum of positive squares in only one way, i.e., 6437494756 + 55950400 = 80234^2 + 7480^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6493445156.

It is not an unprimeable number, because it can be changed into a prime (6493445159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6707621 + ... + 6708588.

It is an arithmetic number, because the mean of its divisors is an integer number (693916195).

Almost surely, 2^6493445156 is an apocalyptic number.

It is an amenable number.

6493445156 is a deficient number, since it is larger than the sum of its proper divisors (5997046354).

6493445156 is a wasteful number, since it uses less digits than its factorization.

6493445156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13416235 (or 13416222 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 47.

The square root of 6493445156 is about 80581.9158124203. The cubic root of 6493445156 is about 1865.6280333541.

The spelling of 6493445156 in words is "six billion, four hundred ninety-three million, four hundred forty-five thousand, one hundred fifty-six".